Genetic study on pelt quality traits in the Gotland sheep breed

Näsholm, A.

doi:10.1080/09064700500335996

Cited by 6 publications

(10 citation statements)

References 12 publications

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“…The h 2 for subjectively assessed wool traits were in the range from 0.23 to 0.38, which is in close agreement with studies on South Australian Merino hoggets ), on Icelandic lambs (Eythorsdottir 1999) and on pelt quality traits for Gotland lambs (Näsholm 2005). The h 2 was high for crimp frequency (0.45) and fineness quality grade (0.43), both characterizing fineness.…”

Section: Heritability Estimatessupporting

confidence: 87%

Genetic parameters for wool traits in Finnsheep lambs

PUNTILA¹,

Mäki²,

Nylander³

2008

AFSci

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Genetic parameters were estimated for wool characteristics of white and coloured Finnsheep. The data consisted of 5 309 lambs from ordinary production flocks, the Finnsheep nucleus flock and a breeding flock. The variance component estimation was done applying REML analyses. Wool traits included fleece uniformity, density, staple formation, lustre, crimp frequency, fineness grade and staple length. There was a smaller dataset that contained also lamb live weight, greasy fleece weight and additional fleece characteristics including fibre diameter measured with the OFDA method. The variance components for direct and maternal effects were estimated using bivariate analysis for 42-day, 120-day weight and greasy fleece weight. Heritability for visually assessed wool characteristics varied from 0.23 to 0.43 and for measured traits from 0.45 to 0.62. Staple length had a high negative genetic correlation with crimp frequency and fineness grade. Heritability of greasy fleece weight was high (0.55) and that of fibre diameter 0.62. The genetic correlation between crimp frequency and fibre diameter was negative (-0.56). The results imply that the assessed traits are useful indicators for fleece quality and those of major importance can be introduced into the breeding programme. The results suggest that there is no antagonism in selection for both growth capacity and wool quantity.

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Section: Heritability Estimatessupporting

confidence: 87%

Genetic parameters for wool traits in Finnsheep lambs

PUNTILA¹,

Mäki²,

Nylander³

2008

AFSci

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“…Estimated additive genetic variances and direct heritabilities for the various pelt quality traits of the Gotland breed were lower in the present study (using Model 1 including maternal genetic and common environmental effects) than the estimates presented by Näsholm (2005). In the earlier study neither maternal genetic nor common environmental effects were considered.…”

Section: Heritabilitiescontrasting

confidence: 74%

“…In a recent study with data from the SSRS, heritabilities for the various pelt quality traits were medium high to high (Näsholm, 2005). Genetic correlations between the traits were mostly positive and low to moderately high.…”

Section: Introductionmentioning

confidence: 93%

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Genetic relationships between pelt quality, maternal ability, and lamb production in the Gotland sheep breed

Näsholm

2008

Livestock Science

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“…Gotland sheep are a Swedish breed prized for their pelts that are uniformly grey in color with curly fleece. Gotland sheep are native to Gotland, a Swedish island in the Baltic Sea [ 1 , 2 ]. They belong to the North European short-tailed sheep type, sheep breeds that are characterized in part by their short tails and are found in Northern Europe from Russia to Iceland [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Shared Ancestry and Signatures of Recent Selection in Gotland Sheep

Ghoreishifar

Rochus

Moghaddaszadeh-Ahrabi

et al. 2021

Genes

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Gotland sheep, a breed native to Gotland, Sweden (an island in the Baltic Sea), split from the Gute sheep breed approximately 100 years ago, and since, has probably been crossed with other breeds. This breed has recently gained popularity, due to its pelt quality. This study estimates the shared ancestors and identifies recent selection signatures in Gotland sheep using 600 K single nucleotide polymorphism (SNP) genotype data. Admixture analysis shows that the Gotland sheep is a distinct breed, but also has shared ancestral genomic components with Gute (~50%), Karakul (~30%), Romanov (~20%), and Fjällnäs (~10%) sheep breeds. Two complementary methods were applied to detect selection signatures: A Bayesian population differentiation FST and an integrated haplotype homozygosity score (iHS). Our results find that seven significant SNPs (q-value < 0.05) using the FST analysis and 55 significant SNPs (p-value < 0.0001) using the iHS analysis. Of the candidate genes that contain significant markers, or are in proximity to them, we identify several belongings to the keratin genes, RXFP2, ADCY1, ENOX1, USF2, COX7A1, ARHGAP28, CRYBB2, CAPNS1, FMO3, and GREB1. These genes are involved in wool quality, polled and horned phenotypes, fertility, twining rate, meat quality, and growth traits. In summary, our results provide shared founders of Gotland sheep and insight into genomic regions maintained under selection after the breed was formed. These results contribute to the detection of candidate genes and QTLs underlying economic traits in sheep.

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Genetic study on pelt quality traits in the Gotland sheep breed

Cited by 6 publications

References 12 publications

Genetic parameters for wool traits in Finnsheep lambs

Genetic parameters for wool traits in Finnsheep lambs

Genetic relationships between pelt quality, maternal ability, and lamb production in the Gotland sheep breed

Shared Ancestry and Signatures of Recent Selection in Gotland Sheep

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